op eoohestee



UNITED STATES PATENT OFFICE.

ERER c. RYAM, OE ROOHEsTER, NEW YORK.

sAsH-LOCK;

SPECIFICATION forming part of Letters Patent No. 226,487, dated April13, 1880.

Application ined october 6,1879.

To all whom t may concern:

Be it known that I, EBER G. BYAM, of the city of Rochester, county ofMonroe, and State of New York, have invented a certain new and usefulImprovement in Sash-Locks; and I do hereby declare that the following isa full, clear, and exact description of the same, reference being had tothe accompanying drawings, in which- Figure l is an elevation, partly insection, showing a fragment of a window and casing with my improvementapplied thereto. Fig. 2 is a partial horizontal section. Fig.3 is aperspective view of the sash-lock.

My invention consists of a sash-lock composed of a horizontally-slidingbolt, a holdingplate or keeper of peculiar form, and a swinging dog, allcombined and arranged to operate as hereinafter more fully set forth.

In the drawings, A is the upper, and B the lower, sash, and C is thecasing or jamb, arranged in the usual manner.

The lock or fastening is as follows: D is a plate or keeper, which issecured on top of the lower sash near the jamb. It is preferably securedby a single screw, a, and has two harp-pointed spurs, I) I), on theunder side, which strike into the wood and assist in holding it inplace.

E is a straight-shooting bolt which rests in the front end of thekeeper, and G is an up-A right dog, made solid with the bolt and movingwith it. The bolt, when fully thrown inward, strikes into a socket, d.of the upper sash, and thus locks the two sashes together, and whenfully thrown outward it releases the upper sash and allows either sashto be operated independently.

The dog has upon its upper end a hookshaped head,f, the point of whichstrikes under a shoulder, g, of a plate, H, attached in the runninggroove of the jamb, said engage ment taking place when the sashes areboth fully closed. In this condition the dog locks the lower sash frombeing raised, while the bolt locks the two sashes together, preventingthe lower one from being raised or the upper one from being lowered.

the under side to admit the bolt, and is also open at the top, exceptthe two side bearings, h h, and a dividing-bearing, c', which, however,extends but partially around the bolt, leaving a throat, k, on the backside for the dog to pass through when thrown back to retract the bolt.In line with this center bearing is also a raised lug, m, on top of theplate, as shown in Fig. 3.

By this means-two guiding-slots are formed for the dog in swinging, oneof which holds the bolt forward in the locked position, and the otherholds it back in the unlocked position.

When the dog is raised into engagementv with its catch it is held bybearing i, so that the bolt cannot be thrown, and when thrown fullyback, as shown in dotted lilies, it is also .held by lug m, so that thebolt cannot strike the upper sash when the lower one is raised.

Having thus described my invention, what l claim is- The saslrlockconsisting of' the plate D, the bolt E, and the dog Gr, the dog beingattached to the bolt, and provided with the'head j', engaging with theplate H, and so arranged, as herein described, that the bolt Ahas asliding movement to lock the two sashes together and the dog has aswinging movement to lock the lower sash to the jamb, as specitied.

In witness whereof I have hereunto signed my naine in the presence oftwo subscribing witnesses.

EBEB C. BYAM.

Witnesses:

R. F. OseooD, JOHN C. BURNS.

